<template>
  <div class="app-container">
    讲师表单
    <el-form label-width="120px">
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name" />
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" controls-position="right" />
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <el-option :value="1" label="高级讲师" />
          <el-option :value="2" label="首席讲师" />
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career" />
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea" />
      </el-form-item>

      <!-- 讲师头像：TODO -->
      <!-- 讲师头像 -->
      <el-form-item label="讲师头像">
        <!-- 头衔缩略图 -->
        <pan-thumb :image="teacher.avatar" />
        <!-- 文件上传按钮 -->
        <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow=true">更换头像</el-button>

        <!--
      v-show：是否显示上传组件
      :key：类似于id，如果一个页面多个图片上传控件，可以做区分
      :url：后台上传的url地址
      @close：关闭上传组件
      @crop-upload-success：上传成功后的回调 
        <input type="file" name="file"/>
        -->
        <image-cropper
          v-show="imagecropperShow"
          :width="300"
          :height="300"
          :key="imagecropperKey"
          :url="BASE_API+'/eduoss/fileoss'"
          field="file"
          @close="close"
          @crop-upload-success="cropSuccess"
        />
      </el-form-item>

      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="saveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
import teacherApi from "@/api/edu/teacher";
import ImageCropper from "@/components/ImageCropper";
import PanThumb from "@/components/PanThumb";

export default {
  components: { ImageCropper, PanThumb },
  data() {
    return {
      teacher: {},

      imagecropperShow: false, //上传弹框组件是否显示
      imagecropperKey: 0, //上传组件key值
      BASE_API: process.env.BASE_API, //获取dev.env.js里面的地址

      saveBtnDisabled: false //保存按钮是否禁用
    };
  },
  created() {
    this.init();
  },
  watch: {
    $route(to, from) {
      this.init();
    }
  },
  methods: {
    //关闭上传弹框的方法
    close() {
      this.imagecropperShow = false;
      this.imagecropperKey++;
    },
    //上传成功方法
    cropSuccess(data) {
      //上传之后接口返回图片地址
      this.teacher.avatar = data.url;
      this.imagecropperShow = false;
      this.imagecropperKey++;
    },
    init() {
      if (this.$route.params.id) {
        const id = this.$route.params.id;
        this.getInfo(id);
      } else {
        //路径没有id值，做添加，清空表单
        this.teacher = {
          avatar:
            "https://edu-1010hh.oss-cn-shenzhen.aliyuncs.com/2020/05/31/c54dae26c00a46b985778d1ea60c5c73file.png"
        };
      }
    },
    //根据讲师id查询的方法
    getInfo(id) {
      teacherApi.getTeacherInfo(id).then(response => {
        this.teacher = response.data.teacher;
      });
    },
    saveOrUpdate() {
      if (!this.teacher.id) {
        //添加
        this.saveTeacher();
      } else {
        this.updateTeacher();
      }
    },
    //修改讲师的方法
    updateTeacher() {
      teacherApi.updateTeacherInfo(this.teacher).then(response => {
        this.$message({
          type: "success",
          message: "修改成功!"
        });
        this.$router.push({ path: "/teacher/table" });
      });
    },
    //添加讲师的方法
    saveTeacher() {
      teacherApi.addTeacher(this.teacher).then(Response => {
        this.$message({
          type: "success",
          message: "添加成功!"
        });
        this.$router.push({ path: "/teacher/table" });
      });
    }
  }
};
</script>